_wp_get_iframed_editor_assets(): array

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Return value

array

The block editor assets.

• $stylesstring|false

  String containing the HTML for styles.

• $scriptsstring|false

  String containing the HTML for scripts.

Performance profile

How much work a call to _wp_get_iframed_editor_assets() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Light

Touches nothing outside its own arguments.

Scaling

Scales with input

The body loops, so the work grows with how much data it finds.

Instructions

82–95

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 110.

Plugin surface

1 hook

Third-party callbacks on 'enqueue_block_assets' run inside this call, and their cost is not bounded by anything here.

Called by

1

1 place in core call this, so the cost is paid more often than your own code shows.

What it touches

• hookthird-party callbacksdo_action()called directly

Further down the call graph this can also reach option, cache, serialize, transient and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 8 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost _wp_get_iframed_editor_assets() can have, taken from its control-flow graph on PHP 8.5.

Hooks and filters fired · 1

One hook fires while _wp_get_iframed_editor_assets() runs, in this order:

1. 1
   do_action( enqueue_block_assets )actionline 342 (+41 into the body)

   Fires after enqueuing block assets for both editor and front-end.

Uses · 18

• wp_theme_has_theme_json()Checks whether a theme or its parent has a theme.json file.
• wp_enqueue_script()Enqueues a script.
• wp_enqueue_style()Enqueues a CSS stylesheet.
• current_theme_supports()Checks a theme's support for a given feature.
• add_filter()Adds a callback function to a filter hook.
• do_action()Calls the callback functions that have been added to an action hook.
• remove_filter()Removes a callback function from a filter hook.
• has_action()Checks if any action has been registered for a hook.
• remove_action()Removes a callback function from an action hook.
• wp_print_styles()Displays styles that are in the $handles queue.
• wp_print_font_faces()Generates and prints font-face styles for given fonts or theme.json fonts.
• wp_print_font_faces_from_style_variations()Generates and prints font-face styles defined the the theme style variations.

Used by · 1

• get_block_editor_settings()Returns the contextualized block editor settings for a selected editor context.

Source code

View on Trac ↗View on GitHub ↗

301function _wp_get_iframed_editor_assets() {302	global $wp_styles, $wp_scripts;303 304	// Keep track of the styles and scripts instance to restore later.305	$current_wp_styles  = $wp_styles;306	$current_wp_scripts = $wp_scripts;307 308	// Create new instances to collect the assets.309	$wp_styles  = new WP_Styles();310	$wp_scripts = new WP_Scripts();311 312	/*313	 * Register all currently registered styles and scripts. The actions that314	 * follow enqueue assets, but don't necessarily register them.315	 */316	$wp_styles->registered  = $current_wp_styles->registered;317	$wp_scripts->registered = $current_wp_scripts->registered;318 319	/*320	 * We generally do not need reset styles for the iframed editor.321	 * However, if it's a classic theme, margins will be added to every block,322	 * which is reset specifically for list items, so classic themes rely on323	 * these reset styles.324	 */325	$wp_styles->done =326		wp_theme_has_theme_json() ? array( 'wp-reset-editor-styles' ) : array();327 328	wp_enqueue_script( 'wp-polyfill' );329	// Enqueue the `editorStyle` handles for all core block, and dependencies.330	wp_enqueue_style( 'wp-edit-blocks' );331 332	if ( current_theme_supports( 'wp-block-styles' ) ) {333		wp_enqueue_style( 'wp-block-library-theme' );334	}335 336	/*337	 * We don't want to load EDITOR scripts in the iframe, only enqueue338	 * front-end assets for the content.339	 */340	add_filter( 'should_load_block_editor_scripts_and_styles', '__return_false' );341	/** This action is documented in wp-includes/script-loader.php */342	do_action( 'enqueue_block_assets' );343	remove_filter( 'should_load_block_editor_scripts_and_styles', '__return_false' );344 345	$block_registry = WP_Block_Type_Registry::get_instance();346 347	/*348	 * Additionally, do enqueue `editorStyle` assets for all blocks, which349	 * contains editor-only styling for blocks (editor content).350	 */351	foreach ( $block_registry->get_all_registered() as $block_type ) {352		if ( isset( $block_type->editor_style_handles ) && is_array( $block_type->editor_style_handles ) ) {353			foreach ( $block_type->editor_style_handles as $style_handle ) {354				wp_enqueue_style( $style_handle );355			}356		}357	}358 359	/**360	 * Remove the deprecated `print_emoji_styles` handler.361	 * It avoids breaking style generation with a deprecation message.362	 */363	$has_emoji_styles = has_action( 'wp_print_styles', 'print_emoji_styles' );364	if ( $has_emoji_styles ) {365		remove_action( 'wp_print_styles', 'print_emoji_styles' );366	}367 368	ob_start();369	wp_print_styles();370	wp_print_font_faces();371	wp_print_font_faces_from_style_variations();372	$styles = ob_get_clean();373 374	if ( $has_emoji_styles ) {375		add_action( 'wp_print_styles', 'print_emoji_styles' );376	}377 378	ob_start();379	wp_print_head_scripts();380	wp_print_footer_scripts();

Changelog

Introduced in 6.0.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.0.4 tag, from src/wp-includes/block-editor.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.